Backplate



FIG. 1 is a perspective view of the backplate showing our new design;

FIG. 2 is a top plan view of the backplate;

FIG. 3 is a bottom plan view of the backplate;

FIG. 4 is a front elevational view of the backplate, the rear elevational being identical; and,

FIG. 5 is a right side elevational view of the backplate, the left side elevational view being identical.

The broken lines shown are for illustrative purposes only and forms no part of the claimed design. 

We claim the ornamental design for a backplate, as shown. 